error when I import project in my myecplise

version is myeclipse10.7 in win8 OS.
many error appears.
Protoc-jar-maven-plugin:3.0.0-b2:run(2 errors)
execution gen-main，in/pom.xml
execution gen-test，in/pom.xml

m2e connector for build-helper-maven-plugin 0.15.0.201207090124 ???
[ERROR] Failed to execute goal on project rtree-3d: Could not resolve dependenci
es for project com.github.davidmoten:rtree-3d:jar:0.1-SNAPSHOT: Could not find a
rtifact au.gov.amsa.risky:formats:jar:0.5.4-SNAPSHOT -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e swit
ch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please rea
d the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyReso
lutionException